<h2><b>Registration form</b></h2>
<form method="POST" action="registration.php">
    <label for="user_name">User name:</label>
    <input type="text" name="user_name"> <br><br>
    <label for="email">Email address:</label>
    <input type="text" name="email"> <br><br>
    <label for="user_name">Password:</label>
    <input type="password" name="password"><br><br>
    <input type="submit" name="submit" value="Submit">
</form>